SciELO - Scientific Electronic Library Online

vol.35 issue4Histology of silver-plated carp skin (Hypophtalmichthys molitrix) and leather resistance testsMorphological and productive responses of marandugrass to combined rates of nitrogen and sulphur author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista Brasileira de Zootecnia

Print version ISSN 1516-3598On-line version ISSN 1806-9290


SOUZA, Maria Luiza Rodrigues de et al. Effect of tanning technique and methods used for skin removal on leather resistance characteristics of Nile Tilapia. R. Bras. Zootec. [online]. 2006, vol.35, n.4, pp.1273-1280. ISSN 1516-3598.

This research evaluated the effect of different methods (fillet skin removal and tanning methods [with or without chromium salts and bioleather]) on leather resistance characteristics of Nile Tilapia (Oreochromis niloticus). Skin from 40 tilapias (450 g) were removed: 20 by pliers and 20 by machine. After skin tanning, the samples were removed for resistance tests, which were done, in a climatized environment (23ºC) and 50% air relative humidity, with EMIC dynamometer, at removal speed of 100 ± 20 mm/mm. No effect of fillet skin removal method on progressive tearing and strength was observed. The method of skin removal by machine resulted in greater (88.48%) elongation than that removed by pliers (71.09%). Skin tanned with chromium salts (25.54 N/mm; 12.18N/mm2) had higher resistance than that tanned without chromium (bioleather) (13.11 N/mm; 9.89 N/mm2). Chromium- and bioleather tanned skins may be used in clothes manufacture since average values of strength, elongation and progresive tearing are higher than 9.80N/mm², 60% and 14.72 N/mm, respectively, which are values recommended for leathers tanned with chromium salts.

Keywords : bioleather skin; fillet skin removal; physical and mechanical tests; skin quality; skin resistance.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License